/* roulang page: index */
:root {
            --color-bg: #0B0E13;
            --color-bg-deep: #06080B;
            --color-bg-elevated: #121720;
            --color-primary: #C9A063;
            --color-primary-hover: #E0B87E;
            --color-accent: #35C4A8;
            --color-danger: #D34A4A;
            --color-text-main: #E8ECEF;
            --color-text-secondary: #A0A8B0;
            --color-text-muted: #6B737C;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-strong: rgba(201, 160, 99, 0.35);
            --radius-card: 6px;
            --radius-button: 3px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(201, 160, 99, 0.2);
            --spacing-section: clamp(60px, 8vw, 120px);
            --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: var(--font-body);
            background: var(--color-bg);
            color: var(--color-text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        
        img {
            max-width: 100%;
            display: block;
        }
        
        button,
        input {
            font-family: inherit;
        }
        
        .grid-container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        
        .section-pad {
            padding: var(--spacing-section) 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            letter-spacing: 0.2em;
            color: var(--color-primary);
            text-transform: uppercase;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .section-tag::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--color-primary);
            display: inline-block;
        }
        
        .section-title {
            font-family: var(--font-display);
            font-size: clamp(26px, 3.4vw, 40px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--color-text-main);
        }
        
        .section-desc {
            color: var(--color-text-secondary);
            font-size: 16px;
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 48px;
            padding: 0 32px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #1A1408;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 4px 24px rgba(201, 160, 99, 0.3);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.92);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(201, 160, 99, 0.08);
            border-color: var(--color-primary-hover);
            color: var(--color-primary-hover);
        }
        .btn-large {
            height: 52px;
            padding: 0 40px;
            font-size: 16px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(201, 160, 99, 0.5);
            outline-offset: 2px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 19, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease;
        }
        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }
        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #8a6d3b);
            color: #1A1408;
            font-weight: 800;
            font-size: 18px;
            border-radius: 4px;
            flex-shrink: 0;
        }
        .logo-text {
            font-family: var(--font-display);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            line-height: 1.3;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 12px;
            font-size: 14px;
            color: var(--color-text-secondary);
            border-radius: 3px;
            position: relative;
            transition: color 0.25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-text-main);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 12px;
            bottom: 3px;
            width: 20px;
            height: 2px;
            background: var(--color-primary);
        }
        .search-box {
            flex: 1;
            max-width: 440px;
            margin: 0 auto;
            position: relative;
        }
        .search-box svg {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            width: 17px;
            height: 17px;
            stroke: var(--color-primary);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            pointer-events: none;
        }
        .search-box input {
            width: 100%;
            height: 42px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 0 18px 0 42px;
            color: var(--color-text-main);
            font-size: 14px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .search-box input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(53, 196, 168, 0.2);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 4px;
            width: 40px;
            height: 40px;
            color: var(--color-primary);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .mobile-menu {
            display: none;
            background: var(--color-bg-deep);
            border-bottom: 1px solid var(--color-border);
            padding: 12px 20px 18px;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .search-box {
            max-width: 100%;
            margin-bottom: 14px;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }

        /* Hero */
        .hero {
            position: relative;
            background: var(--color-bg-deep) url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            padding: calc(72px + 80px) 0 60px;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(6, 8, 11, 0.95) 0%, rgba(6, 8, 11, 0.75) 40%, rgba(11, 14, 19, 0.35) 100%);
            z-index: 1;
        }
        .hero::after {
            content: "";
            position: absolute;
            top: 0;
            right: -10%;
            width: 40%;
            height: 100%;
            background: linear-gradient(180deg, rgba(201, 160, 99, 0.12), transparent 60%);
            transform: skewX(-12deg);
            z-index: 0;
            pointer-events: none;
        }
        .hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .hero-eyebrow {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.18em;
            color: var(--color-text-muted);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 22px;
            opacity: 0.85;
            background: rgba(6, 8, 11, 0.4);
        }
        .hero-title {
            font-family: var(--font-display);
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 700;
            line-height: 1.25;
            max-width: 760px;
            margin-bottom: 22px;
            color: var(--color-text-main);
            text-wrap: balance;
        }
        .hero-title .hero-gold {
            color: var(--color-primary);
        }
        .hero-sub {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 44px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 48px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background: rgba(18, 23, 32, 0.7);
            border: 1px solid var(--color-border);
            border-radius: 30px;
            font-size: 13px;
            color: var(--color-text-secondary);
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            color: var(--color-primary);
            font-size: 14px;
        }
        .hero-slots {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 10px;
        }
        .slot-card {
            flex: 1;
            min-width: 180px;
            background: rgba(18, 23, 32, 0.82);
            border: 1px solid var(--color-border);
            border-left: 3px solid var(--color-primary);
            border-radius: var(--radius-card);
            padding: 16px 18px;
            backdrop-filter: blur(6px);
            transition: all 0.3s ease;
        }
        .slot-card:hover {
            border-color: var(--color-border-strong);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        .slot-time {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text-main);
            font-family: var(--font-display);
        }
        .slot-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
            line-height: 1.5;
        }
        .slot-action {
            margin-top: 10px;
            font-size: 13px;
            color: var(--color-primary);
        }
        .slot-action i {
            font-size: 11px;
            margin-left: 4px;
        }

        @media (max-width: 1024px) {
            .header-inner {
                gap: 12px;
            }
            .nav-left .nav-link,
            .nav-right .nav-link {
                padding: 8px 8px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 15px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .search-box.desktop-search {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .site-header .logo-text {
                font-size: 14px;
                max-width: 220px;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .hero {
                padding: calc(64px + 48px) 0 36px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 8px 12px;
            }
            .hero-slots {
                flex-direction: column;
            }
            .slot-card {
                min-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .site-header .logo-text {
                font-size: 13px;
                max-width: 160px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .btn {
                height: 44px;
                padding: 0 22px;
                font-size: 14px;
            }
        }

        /* Pain Section */
        .pain-section {
            background: var(--color-bg-deep);
            position: relative;
        }
        .pain-list {
            list-style: none;
        }
        .pain-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 26px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .pain-item:last-child {
            border-bottom: none;
        }
        .pain-num {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-danger);
            opacity: 0.85;
            flex-shrink: 0;
            line-height: 1;
            min-width: 52px;
            border-left: 2px solid var(--color-danger);
            padding-left: 12px;
        }
        .pain-text {
            font-size: 17px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            padding-top: 4px;
        }

        @media (max-width: 640px) {
            .pain-item {
                gap: 14px;
            }
            .pain-num {
                font-size: 22px;
                min-width: 42px;
                padding-left: 8px;
            }
            .pain-text {
                font-size: 15px;
            }
        }

        /* Solution Section */
        .solution-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            margin-bottom: 56px;
        }
        .solution-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .solution-img img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .solution-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(6, 8, 11, 0.35));
        }
        .solution-points {
            list-style: none;
        }
        .solution-point {
            display: flex;
            gap: 18px;
            padding: 22px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .solution-point:last-child {
            border-bottom: none;
        }
        .solution-point-icon {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border: 1px solid var(--color-primary);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 15px;
            transform: rotate(0deg);
        }
        .solution-point h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 6px;
        }
        .solution-point p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .flow-steps {
            display: flex;
            gap: 14px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .flow-step {
            flex: 1;
            min-width: 160px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 18px;
            position: relative;
            transition: all 0.3s ease;
        }
        .flow-step:hover {
            border-color: var(--color-border-strong);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .step-badge {
            display: inline-block;
            background: var(--color-primary);
            color: #1A1408;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 2px;
            letter-spacing: 0.1em;
            margin-bottom: 12px;
        }
        .flow-step h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .solution-layout {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .solution-img img {
                height: 260px;
            }
            .flow-steps {
                flex-direction: column;
            }
            .flow-step {
                min-width: 100%;
            }
        }

        /* Data/Results Section */
        .data-section {
            background: var(--color-bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-item {
            text-align: center;
            padding: 32px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }
        .data-item:hover {
            border-color: var(--color-border);
            background: rgba(18, 23, 32, 0.5);
        }
        .data-number {
            font-family: var(--font-display);
            font-size: clamp(40px, 6vw, 64px);
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1;
        }
        .data-number .suffix {
            color: var(--color-accent);
            font-size: 0.7em;
        }
        .data-label {
            color: var(--color-text-muted);
            font-size: 14px;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
            display: inline-block;
        }

        @media (max-width: 940px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 480px) {
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .data-number {
                font-size: 36px;
            }
        }

        /* Testimonials */
        .testi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testi-card {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
        }
        .testi-card:hover {
            background: rgba(24, 30, 40, 0.9);
            border-color: var(--color-border-strong);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .testi-quote {
            color: var(--color-primary);
            font-size: 36px;
            line-height: 1;
            margin-bottom: 14px;
            font-family: Georgia, serif;
        }
        .testi-text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 22px;
            min-height: 90px;
        }
        .testi-person {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
        }
        .testi-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #3A4250;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 700;
        }
        .testi-person .role {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        @media (max-width: 940px) {
            .testi-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .testi-text {
                min-height: 0;
            }
        }

        /* Service Scope / Directory Section */
        .scope-section {
            background: var(--color-bg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
        }
        .scope-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scope-card {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .scope-card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .scope-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-bottom: 1px solid var(--color-border);
        }
        .scope-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scope-card-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--color-primary);
            border: 1px solid rgba(201, 160, 99, 0.3);
            padding: 3px 10px;
            border-radius: 2px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .scope-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text-main);
        }
        .scope-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .scope-card-link {
            font-size: 14px;
            color: var(--color-primary);
            font-weight: 600;
        }
        .scope-card-link i {
            font-size: 11px;
            margin-left: 4px;
            transition: transform 0.3s ease;
        }
        .scope-card:hover .scope-card-link i {
            transform: translateX(4px);
        }

        @media (max-width: 940px) {
            .scope-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* Latest News / CMS */
        .news-section {
            background: var(--color-bg-deep);
        }
        .news-list {
            margin-top: 8px;
        }
        .news-card {
            margin-bottom: 16px;
        }
        .news-card-inner {
            display: flex;
            gap: 20px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            padding: 18px;
            transition: all 0.3s ease;
            height: 100%;
        }
        .news-card-inner:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-hover);
        }
        .news-thumb {
            flex-shrink: 0;
            width: 140px;
            height: 110px;
            border-radius: 4px;
            overflow: hidden;
            background: #1A2029;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .news-badge-wrapper {
            margin-bottom: 6px;
        }
        .news-badge {
            display: inline-block;
            font-size: 11px;
            color: var(--color-primary);
            border: 1px solid rgba(201, 160, 99, 0.35);
            padding: 2px 8px;
            border-radius: 2px;
            letter-spacing: 0.04em;
        }
        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 6px;
            line-height: 1.45;
            transition: color 0.25s ease;
        }
        .news-card:hover .news-title {
            color: var(--color-primary);
        }
        .news-excerpt {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-meta-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 10px;
        }
        .news-date {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .news-more {
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 600;
        }
        .news-empty {
            background: var(--color-bg-elevated);
            border: 1px dashed var(--color-border-strong);
            border-radius: var(--radius-card);
            padding: 70px 30px;
            text-align: center;
        }
        .news-empty .empty-icon {
            font-size: 44px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }
        .news-empty p {
            color: var(--color-text-secondary);
            font-size: 16px;
        }

        @media (max-width: 640px) {
            .news-card-inner {
                flex-direction: column;
                padding: 14px;
            }
            .news-thumb {
                width: 100%;
                height: 130px;
            }
        }

        /* FAQ */
        .faq-section {
            background: var(--color-bg);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            align-items: start;
        }
        .faq-item {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item.open {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 22px;
            background: transparent;
            border: none;
            color: var(--color-text-main);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: color 0.25s ease;
        }
        .faq-item.open .faq-question {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border: 1px solid var(--color-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--color-primary);
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #1A1408;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 22px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 16px;
            margin: 0 22px 22px;
        }

        @media (max-width: 940px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Final CTA */
        .cta-section {
            position: relative;
            background: var(--color-bg-deep) url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            padding: calc(var(--spacing-section) * 0.9) 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(6, 8, 11, 0.94) 30%, rgba(11, 14, 19, 0.6));
            z-index: 1;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -20%;
            right: -5%;
            width: 30%;
            height: 60%;
            background: rgba(201, 160, 99, 0.1);
            transform: skewX(-15deg);
            z-index: 0;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-title {
            font-family: var(--font-display);
            font-size: clamp(26px, 3.6vw, 40px);
            font-weight: 700;
            margin-bottom: 18px;
            line-height: 1.3;
        }
        .cta-desc {
            color: var(--color-text-secondary);
            font-size: 16px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 64px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            margin-bottom: 14px;
            display: inline-block;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--color-primary);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        /* Scroll Top */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 22px;
            width: 44px;
            height: 44px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border-strong);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            cursor: pointer;
            z-index: 900;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .scroll-top.show {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            background: rgba(201, 160, 99, 0.12);
        }

        .remove-margin {
            margin-bottom: 0;
        }

        .text-center {
            text-align: center;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --color-bg: #0B0E13;
        --color-bg-deep: #06080B;
        --color-bg-elevated: #121720;
        --color-primary: #C9A063;
        --color-primary-hover: #E0B87E;
        --color-accent: #35C4A8;
        --color-danger: #D34A4A;
        --color-text-main: #E8ECEF;
        --color-text-secondary: #A0A8B0;
        --color-text-muted: #6B737C;
        --color-border: rgba(255,255,255,0.08);
        --color-border-strong: rgba(201,160,99,0.35);
        --radius-card: 6px;
        --radius-button: 3px;
        --shadow-card: 0 8px 30px rgba(0,0,0,0.35);
        --shadow-hover: 0 12px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(201,160,99,0.2);
        --spacing-section: clamp(60px, 8vw, 120px);
        --font-display: "思源黑体", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        --font-body: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-body);
        background: var(--color-bg);
        color: var(--color-text-main);
        line-height: 1.7;
        font-size: 15px;
        -webkit-font-smoothing: antialiased;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.3s ease;
    }
    a:hover {
        color: var(--color-primary-hover);
    }
    button {
        font-family: inherit;
    }

    /* ===== 容器 ===== */
    .grid-container {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
        width: 100%;
    }
    main {
        min-height: 60vh;
    }

    /* ===== Header / 导航 ===== */
    .site-header {
        background: rgba(11, 14, 19, 0.82);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    .header-inner {
        display: flex;
        align-items: center;
        gap: 16px;
        padding: 14px 0;
    }
    .site-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        flex-shrink: 0;
    }
    .logo-mark {
        width: 38px;
        height: 38px;
        background: var(--color-primary);
        color: #0B0E13;
        font-family: var(--font-display);
        font-weight: 700;
        font-size: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 3px;
        transform: skewX(-8deg);
        box-shadow: 0 0 12px rgba(201, 160, 99, 0.3);
    }
    .logo-text {
        font-family: var(--font-display);
        font-size: 17px;
        font-weight: 700;
        color: var(--color-primary);
        white-space: nowrap;
        letter-spacing: 0.02em;
    }
    .nav-left,
    .nav-right {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .nav-link {
        display: inline-block;
        padding: 8px 12px;
        color: var(--color-text-secondary);
        font-size: 14px;
        text-decoration: none;
        position: relative;
        transition: color 0.3s ease;
        white-space: nowrap;
    }
    .nav-link:hover {
        color: var(--color-text-main);
    }
    .nav-link.active {
        color: var(--color-text-main);
    }
    .nav-link.active::after {
        content: "";
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: 0;
        width: 20px;
        height: 2px;
        background: var(--color-primary);
    }
    .search-box {
        display: flex;
        align-items: center;
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-border);
        border-radius: 8px;
        padding: 0 16px;
        height: 42px;
        flex: 1;
        max-width: 480px;
        margin: 0 auto;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
        min-width: 200px;
    }
    .search-box:focus-within {
        border-color: var(--color-accent);
        box-shadow: 0 0 0 3px rgba(53, 196, 168, 0.25);
    }
    .search-box svg {
        width: 15px;
        height: 15px;
        fill: none;
        stroke: var(--color-primary);
        stroke-width: 2;
        stroke-linecap: round;
        margin-right: 10px;
        flex-shrink: 0;
    }
    .search-box input {
        background: transparent;
        border: none;
        outline: none;
        color: var(--color-text-main);
        font-size: 14px;
        width: 100%;
    }
    .search-box input::placeholder {
        color: var(--color-text-muted);
    }
    .search-box input::-webkit-search-cancel-button {
        -webkit-appearance: none;
    }
    .nav-toggle {
        display: none;
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-border);
        color: var(--color-text-main);
        width: 40px;
        height: 40px;
        border-radius: 6px;
        font-size: 15px;
        cursor: pointer;
        align-items: center;
        justify-content: center;
        transition: border-color 0.3s ease, color 0.3s ease;
        margin-left: auto;
    }
    .nav-toggle:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }
    .mobile-menu {
        display: none;
        padding: 16px 0 20px;
        border-top: 1px solid var(--color-border);
        background: var(--color-bg-elevated);
    }
    .mobile-menu .search-box {
        margin: 0 0 12px;
        max-width: 100%;
    }
    .mobile-menu .nav-link {
        display: block;
        padding: 12px 16px;
        border-radius: 4px;
        margin-bottom: 4px;
        font-size: 15px;
    }
    .mobile-menu .nav-link:hover {
        background: rgba(255, 255, 255, 0.04);
    }
    .mobile-menu.open {
        display: block;
    }

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 14px 32px;
        border-radius: var(--radius-button);
        font-size: 15px;
        font-weight: 600;
        text-decoration: none;
        transition: all 0.3s ease;
        cursor: pointer;
        border: 1px solid transparent;
        min-height: 48px;
    }
    .btn-primary {
        background: var(--color-primary);
        color: #0B0E13;
        border-color: var(--color-primary);
    }
    .btn-primary:hover {
        background: var(--color-primary-hover);
        border-color: var(--color-primary-hover);
        color: #0B0E13;
        transform: translateY(-1px);
        box-shadow: 0 0 20px rgba(201, 160, 99, 0.25);
    }
    .btn-primary:active {
        transform: translateY(0);
        filter: brightness(0.95);
    }
    .btn-outline {
        background: transparent;
        border-color: var(--color-primary);
        color: var(--color-primary);
    }
    .btn-outline:hover {
        background: rgba(201, 160, 99, 0.1);
        border-color: var(--color-primary-hover);
        color: var(--color-primary-hover);
    }
    .btn:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 2px;
    }

    /* ===== 分类标签 / 徽章 ===== */
    .category-tag {
        display: inline-block;
        padding: 4px 12px;
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-primary);
        color: var(--color-primary);
        font-size: 12px;
        font-weight: 500;
        border-radius: 3px;
        letter-spacing: 0.03em;
    }

    /* ===== 文章头部 ===== */
    .article-header-section {
        background: var(--color-bg-deep);
        border-bottom: 1px solid var(--color-border);
        position: relative;
        padding: 48px 0 36px;
        overflow: hidden;
    }
    .article-header-section::before {
        content: "";
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        opacity: 0.06;
        pointer-events: none;
    }
    .article-header {
        position: relative;
        z-index: 1;
        max-width: 880px;
        margin: 0 auto;
    }
    .breadcrumb {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        color: var(--color-text-muted);
        margin-bottom: 24px;
    }
    .breadcrumb a {
        color: var(--color-text-secondary);
    }
    .breadcrumb a:hover {
        color: var(--color-primary);
    }
    .breadcrumb .sep {
        color: var(--color-border-strong);
    }
    .breadcrumb .current {
        color: var(--color-text-main);
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 420px;
    }
    .article-meta-top {
        margin-bottom: 14px;
    }
    .article-title {
        font-family: var(--font-display);
        font-size: clamp(28px, 4vw, 38px);
        font-weight: 700;
        line-height: 1.3;
        color: var(--color-text-main);
        margin: 0 0 20px;
    }
    .article-subtitle {
        color: var(--color-text-secondary);
        font-size: 16px;
        margin-top: 8px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 18px;
        font-size: 14px;
        color: var(--color-text-muted);
    }
    .article-meta i {
        margin-right: 6px;
        color: var(--color-primary);
    }
    .share-box {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-left: auto;
    }
    .share-btn {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-border);
        color: var(--color-text-muted);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        text-decoration: none;
        transition: all 0.3s ease;
        cursor: pointer;
    }
    .share-btn:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
        transform: translateY(-2px);
    }

    /* ===== 正文排版 ===== */
    .article-body-section {
        padding: var(--spacing-section) 0 0;
    }
    .article-body-wrap {
        max-width: 780px;
        margin: 0 auto;
    }
    .article-body {
        font-size: 16px;
        line-height: 1.85;
        color: var(--color-text-main);
    }
    .article-body p {
        margin-bottom: 24px;
    }
    .article-body h2,
    .article-body h3,
    .article-body h4 {
        font-family: var(--font-display);
        color: var(--color-text-main);
        line-height: 1.4;
        margin: 36px 0 16px;
    }
    .article-body h2 {
        font-size: 26px;
    }
    .article-body h3 {
        font-size: 20px;
    }
    .article-body h4 {
        font-size: 17px;
    }
    .article-body ul,
    .article-body ol {
        margin: 0 0 24px;
        padding-left: 24px;
    }
    .article-body ul {
        list-style: none;
        padding-left: 0;
    }
    .article-body ul li {
        position: relative;
        padding-left: 24px;
        margin-bottom: 10px;
    }
    .article-body ul li::before {
        content: "◆";
        position: absolute;
        left: 0;
        top: 0;
        color: var(--color-primary);
        font-size: 12px;
        line-height: 1.8;
    }
    .article-body ol {
        padding-left: 22px;
    }
    .article-body ol li {
        margin-bottom: 10px;
    }
    .article-body blockquote {
        padding: 18px 24px;
        background: rgba(201, 160, 99, 0.06);
        border-left: 3px solid var(--color-primary);
        margin: 0 0 24px;
        color: var(--color-text-secondary);
        font-size: 15px;
        border-radius: 0 6px 6px 0;
    }
    .article-body img {
        border-radius: 8px;
        border: 1px solid var(--color-border);
        margin: 24px 0;
        width: 100%;
        height: auto;
    }
    .article-body a {
        color: var(--color-accent);
        text-decoration: underline;
        text-underline-offset: 3px;
    }
    .article-body a:hover {
        color: var(--color-primary-hover);
    }
    .article-body code {
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-border);
        padding: 2px 8px;
        border-radius: 4px;
        font-family: "SFMono-Regular", Consolas, monospace;
        font-size: 13px;
    }
    .article-body pre {
        background: var(--color-bg-elevated);
        border-left: 3px solid var(--color-primary);
        padding: 20px;
        border-radius: 6px;
        overflow-x: auto;
        margin: 0 0 24px;
    }
    .article-body pre code {
        background: transparent;
        border: none;
        padding: 0;
    }
    .article-body hr {
        border: none;
        border-top: 1px solid var(--color-border);
        margin: 40px 0;
    }

    /* ===== 文章标签 / 分享 ===== */
    .article-tags {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 10px;
        padding: 30px 0;
        border-top: 1px solid var(--color-border);
        margin-top: 40px;
    }
    .article-tags .fas {
        color: var(--color-primary);
        margin-right: 4px;
    }
    .article-tags a {
        display: inline-block;
        padding: 4px 14px;
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-border);
        color: var(--color-text-secondary);
        font-size: 13px;
        border-radius: 3px;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    .article-tags a:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }
    .article-share-bottom {
        display: flex;
        align-items: center;
        gap: 12px;
        padding-bottom: 40px;
        font-size: 14px;
        color: var(--color-text-muted);
    }
    .article-share-bottom .share-btn {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }

    /* ===== 空态 ===== */
    .article-empty {
        text-align: center;
        padding: 80px 20px;
        background: var(--color-bg-elevated);
        border: 1px dashed var(--color-border-strong);
        border-radius: var(--radius-card);
        margin-bottom: 60px;
    }
    .article-empty i {
        font-size: 48px;
        color: var(--color-primary);
        margin-bottom: 20px;
        display: block;
    }
    .article-empty h2 {
        font-family: var(--font-display);
        font-size: 24px;
        margin-bottom: 12px;
    }
    .article-empty p {
        color: var(--color-text-secondary);
        margin-bottom: 28px;
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: var(--spacing-section) 0;
        background: var(--color-bg-deep);
        margin-top: 60px;
    }
    .section-heading {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 36px;
    }
    .section-heading::before {
        content: "";
        width: 4px;
        height: 22px;
        background: var(--color-primary);
        border-radius: 2px;
    }
    .section-heading h2 {
        font-family: var(--font-display);
        font-size: 28px;
        font-weight: 700;
        color: var(--color-text-main);
        margin: 0;
    }
    .related-card {
        display: flex;
        flex-direction: column;
        background: var(--color-bg-elevated);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        overflow: hidden;
        text-decoration: none;
        transition: all 0.3s ease;
        height: 100%;
    }
    .related-card:hover {
        border-color: var(--color-border-strong);
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
    }
    .related-thumb {
        aspect-ratio: 16 / 9;
        overflow: hidden;
    }
    .related-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .related-card:hover .related-thumb img {
        transform: scale(1.03);
    }
    .related-info {
        padding: 20px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        flex: 1;
    }
    .related-info h3 {
        font-family: var(--font-display);
        font-size: 17px;
        color: var(--color-text-main);
        margin: 0;
        line-height: 1.4;
        transition: color 0.3s ease;
    }
    .related-card:hover .related-info h3 {
        color: var(--color-primary);
    }
    .related-info p {
        font-size: 14px;
        color: var(--color-text-secondary);
        line-height: 1.7;
        margin: 0;
        flex: 1;
    }
    .related-time {
        font-size: 13px;
        color: var(--color-text-muted);
    }
    .related-time i {
        margin-right: 6px;
        color: var(--color-primary);
    }
    .back-row {
        display: flex;
        justify-content: center;
        margin-top: 40px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--color-bg-deep);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 60px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
    }
    .footer-brand .site-logo {
        margin-bottom: 14px;
    }
    .footer-desc {
        font-size: 14px;
        color: var(--color-text-secondary);
        line-height: 1.8;
        max-width: 360px;
    }
    .footer-col h4 {
        font-family: var(--font-display);
        font-size: 15px;
        color: var(--color-text-main);
        font-weight: 600;
        margin-bottom: 18px;
        position: relative;
        padding-bottom: 10px;
    }
    .footer-col h4::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 24px;
        height: 2px;
        background: var(--color-primary);
    }
    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 10px;
    }
    .footer-links a {
        color: var(--color-text-secondary);
        font-size: 14px;
        text-decoration: none;
        transition: color 0.3s ease, padding-left 0.3s ease;
    }
    .footer-links a:hover {
        color: var(--color-primary);
        padding-left: 4px;
    }
    .footer-contact p {
        color: var(--color-text-secondary);
        font-size: 14px;
        line-height: 2;
        margin-bottom: 6px;
    }
    .footer-contact i {
        color: var(--color-primary);
        margin-right: 8px;
        width: 16px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: var(--color-text-muted);
    }

    /* ===== 响应式 ===== */
    @media screen and (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .footer-brand {
            grid-column: 1 / -1;
        }
        .related-section .cell {
            margin-bottom: 24px;
        }
    }
    @media screen and (max-width: 768px) {
        .header-inner {
            gap: 10px;
        }
        .desktop-search {
            display: none;
        }
        .nav-left,
        .nav-right {
            display: none;
        }
        .nav-toggle {
            display: inline-flex;
        }
        .site-header .grid-container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .logo-text {
            font-size: 15px;
        }
        .article-header-section {
            padding: 32px 0 24px;
        }
        .article-meta {
            gap: 12px;
        }
        .share-box {
            margin-left: 0;
            width: 100%;
            justify-content: flex-start;
        }
        .related-section {
            margin-top: 40px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-brand {
            grid-column: auto;
        }
        .section-heading h2 {
            font-size: 24px;
        }
    }
    @media screen and (max-width: 640px) {
        .grid-container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .article-header-section {
            padding: 24px 0 20px;
        }
        .article-title {
            font-size: 24px;
        }
        .article-body {
            font-size: 15px;
        }
        .article-body h2 {
            font-size: 21px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .article-tags {
            gap: 8px;
        }
        .btn {
            padding: 12px 24px;
            min-height: 44px;
            font-size: 14px;
        }
    }

/* roulang page: category1 */
:root {
            --color-bg: #0B0E13;
            --color-bg-deep: #06080B;
            --color-bg-elevated: #121720;
            --color-primary: #C9A063;
            --color-primary-hover: #E0B87E;
            --color-accent: #35C4A8;
            --color-danger: #D34A4A;
            --color-text-main: #E8ECEF;
            --color-text-secondary: #A0A8B0;
            --color-text-muted: #6B737C;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-strong: rgba(201, 160, 99, 0.35);
            --radius-card: 6px;
            --radius-button: 3px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(201, 160, 99, 0.2);
            --spacing-section: clamp(60px, 8vw, 120px);
            --font-display: "思源黑体", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: var(--color-bg);
            color: var(--color-text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        ul {
            list-style: none;
        }
        input,
        button {
            font-family: inherit;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 14, 19, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
            gap: 16px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #0B0E13;
            font-weight: 700;
            font-size: 18px;
            border-radius: 4px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-display);
            white-space: nowrap;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 15px;
            color: var(--color-text-secondary);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color .2s ease;
        }
        .nav-link:hover {
            color: var(--color-text-main);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width .3s ease;
        }
        .nav-link:hover::after {
            width: 20px;
        }
        .nav-link.active {
            color: var(--color-primary);
        }
        .nav-link.active::after {
            width: 20px;
        }
        .search-box {
            flex: 1;
            max-width: 420px;
            display: flex;
            align-items: center;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 0 14px;
            height: 42px;
            gap: 10px;
            transition: border-color .2s, box-shadow .2s;
        }
        .search-box svg {
            width: 18px;
            height: 18px;
            stroke: var(--color-primary);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            flex-shrink: 0;
        }
        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--color-text-main);
            font-size: 14px;
        }
        .search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .search-box:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(53, 196, 168, 0.25);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text-main);
            width: 42px;
            height: 42px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 16px;
            align-items: center;
            justify-content: center;
            transition: border-color .2s;
        }
        .nav-toggle:hover {
            border-color: var(--color-border-strong);
        }
        .mobile-menu {
            display: none;
            padding: 12px 16px 16px;
            border-top: 1px solid var(--color-border);
            background: var(--color-bg-deep);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-menu .search-box {
            margin-bottom: 12px;
            max-width: 100%;
        }
        .page-hero {
            position: relative;
            padding: 90px 0 70px;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(6, 8, 11, 0.95) 0%, rgba(6, 8, 11, 0.85) 40%, rgba(6, 8, 11, 0.55) 100%);
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 380px;
            height: 100%;
            background: linear-gradient(135deg, rgba(201, 160, 99, 0.08) 0%, transparent 70%);
            transform: skewX(-12deg);
            pointer-events: none;
        }
        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .page-breadcrumb {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 26px;
        }
        .page-breadcrumb a {
            color: var(--color-text-muted);
            transition: color .2s;
        }
        .page-breadcrumb a:hover {
            color: var(--color-primary);
        }
        .page-breadcrumb .sep {
            color: var(--color-border-strong);
            margin: 0 8px;
        }
        .page-breadcrumb .current {
            color: var(--color-text-main);
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 14px;
            border: 1px solid var(--color-border-strong);
            border-radius: 20px;
            background: rgba(201, 160, 99, 0.08);
            color: var(--color-primary);
            font-size: 13px;
            margin-bottom: 16px;
        }
        .hero-tag i {
            font-size: 12px;
        }
        .page-hero h1 {
            font-family: var(--font-display);
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            line-height: 1.28;
            margin-bottom: 16px;
            max-width: 760px;
        }
        .hero-sub {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin-bottom: 30px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s ease;
            border: none;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #0B0E13;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 160, 99, 0.2);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(201, 160, 99, 0.1);
            border-color: var(--color-primary-hover);
            color: var(--color-primary-hover);
            transform: translateY(-2px);
        }
        .btn:focus,
        .nav-toggle:focus,
        input:focus,
        button:focus {
            outline: 2px solid rgba(211, 74, 74, 0.5);
            outline-offset: 2px;
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-deep {
            background: var(--color-bg-deep);
        }
        .section-head {
            margin-bottom: 48px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .section-index {
            font-family: var(--font-display);
            font-size: 14px;
            color: var(--color-primary);
            border: 1px solid var(--color-border-strong);
            padding: 4px 10px;
            border-radius: 3px;
            letter-spacing: 1px;
            flex-shrink: 0;
            margin-top: 4px;
            background: rgba(201, 160, 99, 0.06);
        }
        .section-title {
            font-family: var(--font-display);
            font-size: clamp(22px, 2.4vw, 30px);
            font-weight: 700;
            line-height: 1.35;
        }
        .section-sub {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-top: 8px;
            max-width: 720px;
        }
        .intro-text {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            max-width: 960px;
            border-left: 3px solid var(--color-primary);
            padding-left: 24px;
            background: rgba(201, 160, 99, 0.04);
            padding-top: 12px;
            padding-bottom: 12px;
            border-radius: 0 6px 6px 0;
        }
        .intro-text strong {
            color: var(--color-primary);
            font-weight: 600;
        }
        .entry-list {
            display: flex;
            flex-direction: column;
            gap: 60px;
        }
        .entry-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .entry-item.flip .entry-content {
            order: 2;
        }
        .entry-item.flip .entry-image {
            order: 1;
        }
        .entry-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .entry-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .entry-image:hover img {
            transform: scale(1.03);
        }
        .entry-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 60%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
            transition: left .6s ease;
        }
        .entry-image:hover::after {
            left: 120%;
        }
        .entry-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(201, 160, 99, 0.12);
            border: 1px solid var(--color-border-strong);
            color: var(--color-primary);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 3px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .entry-content h3 {
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .entry-content p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .entry-list-dot {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .entry-list-dot li {
            display: flex;
            align-items: baseline;
            gap: 8px;
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }
        .entry-list-dot li::before {
            content: '◆';
            color: var(--color-primary);
            font-size: 10px;
            flex-shrink: 0;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .process-step {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 30px 28px;
            position: relative;
            transition: all .3s ease;
        }
        .process-step:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            font-family: var(--font-display);
            font-size: 13px;
            color: #0B0E13;
            background: var(--color-primary);
            display: inline-block;
            padding: 3px 10px;
            border-radius: 3px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .coverage-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }
        .coverage-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: 3px;
            color: var(--color-text-main);
            font-size: 14px;
            transition: all .2s ease;
        }
        .coverage-tag i {
            color: var(--color-primary);
            font-size: 13px;
        }
        .coverage-tag:hover {
            border-color: var(--color-border-strong);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .coverage-note {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 720px;
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .faq-item {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color .3s;
        }
        .faq-item.active {
            border-color: var(--color-border-strong);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            border: none;
            color: var(--color-text-main);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            line-height: 1.5;
        }
        .faq-question .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(201, 160, 99, 0.1);
            border: 1px solid var(--color-border-strong);
            color: var(--color-primary);
            border-radius: 50%;
            font-size: 14px;
            transition: transform .3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer p {
            padding: 0 24px 22px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .cta-section {
            position: relative;
            padding: var(--spacing-section) 0;
            background: var(--color-bg-deep);
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -10%;
            width: 60%;
            height: 120%;
            background: linear-gradient(135deg, rgba(201, 160, 99, 0.08) 0%, transparent 60%);
            transform: skewX(-12deg);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 50%;
            height: 100%;
            background: linear-gradient(225deg, rgba(53, 196, 168, 0.04) 0%, transparent 60%);
            transform: skewX(-12deg);
        }
        .cta-section .grid-container {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-family: var(--font-display);
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-sub {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .site-footer {
            background: var(--color-bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 360px;
            margin-top: 14px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--color-text-main);
            font-family: var(--font-display);
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }
        .footer-contact i {
            color: var(--color-primary);
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 12px;
            }
            .search-box {
                max-width: 300px;
            }
            .entry-item {
                gap: 30px;
            }
            .entry-image img {
                height: 240px;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .nav-left,
            .nav-right,
            .desktop-search {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .header-inner {
                justify-content: space-between;
            }
            .search-box {
                flex: 1;
                max-width: 100%;
            }
            .page-hero {
                padding: 60px 0 50px;
            }
            .entry-item {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .entry-item.flip .entry-content {
                order: 1;
            }
            .entry-item.flip .entry-image {
                order: 2;
            }
            .entry-image img {
                height: 220px;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section-head {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 15px;
            }
            .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .entry-content h3 {
                font-size: 20px;
            }
            .faq-question {
                font-size: 15px;
                padding: 18px 16px;
            }
            .faq-answer p {
                padding: 0 16px 18px;
                font-size: 14px;
            }
            .cta-btns .btn {
                width: 100%;
                max-width: 260px;
            }
            .footer-bottom {
                font-size: 12px;
                line-height: 1.6;
            }
        }